<template>
	<view class="container">

		<view>
			<!-- 列表 -->
			<view class="cart-list" v-if="isLogin">
				<block v-for="(item, index) in cartList" :key="item.id" >
					<view class="cart-item" :class="{'b-b': index!==cartList.length-1}" >
						<view class="image-wrapper">
							<image @click="detail(item.sid)" :src="item.image" 
								:class="[item.loaded]"
								mode="aspectFill" 
								lazy-load 
								@load="onImageLoad('cartList', index)" 
								@error="onImageError('cartList', index)"
							></image>
							<view 
								class="yticon icon-xuanzhong2 checkbox"
								:class="{checked: item.checked}"
								@click="check('item', index)"
							></view>
						</view>
						<view class="item-right">
							<text class="text-over title" @click="detail(item.sid)">{{item.title}}</text>
							<view class="bot-row " >
								<text class="attr" @click="detail(item.sid)">库存：{{item.stock}} </text>
								<text v-if="item.group_id>1" class="coupon-tip" style="width: 110upx; margin-left: 20upx; text-align: center;">已享{{item.vipzk}}折</text>
							</view>
							<view class="bot-row">
								<text class="price" @click="detail(item.sid)">¥{{item.price}}</text>
								<text v-if="item.group_id>1" class="price text-line" style="float: right;font-size: 20upx; text-align: center; color: #999;">打折前¥{{item.yprice}}</text>
							</view>
							
							<uni-number-box 
								class="step"
								:min="1" 
								:max="item.stock"
								:value="item.number>item.stock?item.stock:item.number"
								:isMax="item.number>=item.stock?true:false"
								:isMin="item.number===1"
								:index="index"
								:id="item.id"
								@eventChange="numberChange"
							></uni-number-box>
						</view>
						<text class="del-btn yticon icon-fork" @click="deleteCartItem(index)"></text>
					</view>
				</block>
			</view>
			<view class="cart-list" style="padding: 30upx;" v-else>
				<home-vipcard :userinfo="userinfo" @loginAct="showLoginAct" @qrcode="showQrcode = true"></home-vipcard>
			</view>
			<!-- 底部菜单栏 -->
			<view class="action-section">
				<view class="checkbox">
					<image 
						:src="allChecked?'/static/selected.png':'/static/select.png'" 
						mode="aspectFit"
						@click="check('all')"
					></image>
					<view class="clear-btn" :class="{show: allChecked}" @click="clearCart">
						清空
					</view>
				</view>
				<view class="total-box">
					<text class="price">¥{{total}}</text>
				</view>
				<button type="primary" class="no-border confirm-btn" @click="createOrder">去结算</button>
			</view>
		</view>
	</view>
</template>

<script>
	import {
		mapState
	} from 'vuex';
	import uniNumberBox from '@/components/uni-number-box.vue'
	export default {
		components: {
			uniNumberBox
		},
		data() {
			return {
				total: 0, //总价格
				allChecked: false, //全选状态  true|false
				empty: false, //空白页现实  true|false
				cartList: [],
				List:[],
				isLogin: false,
				userinfo:[],
			};
		},
		onLoad(){		
			uni.setNavigationBarTitle({
			    title: '购物车'
			});
		},
		onShow() {
			uni.removeStorageSync('GwcData');
			this.info()
		},
		watch:{
			//显示空白页
			cartList(e){
				let empty = e.length === 0 ? true: false;
				if(this.empty !== empty){
					this.empty = empty;
				}
			}
		},
		computed:{
			...mapState(['hasLogin'])
		},
		methods: {
			info() {
				let this_=this
				let data = {};
				data.id=this.id
				if(uni.getStorageSync("userinfo").id){
					data.token = uni.getStorageSync("userinfo").token;
					data.uid = uni.getStorageSync("userinfo").id;
					this.isLogin = true
				}
				uni.request({
					url: this.configs.webUrl+'/api/shop/gwc',
					data: data,
					success: data => {
						//console.log(data.data.rows)
						this.loadData(data.data.rows);
						this.setTabBarBadges(data.data.gwccount)
					},
					fail: (data, code) => {
					}
				});
			},
			showLoginAct(){
				uni.navigateTo({
					url:'/pages/login/login'
				})
			},
			addgwc(sum,id){
				let this_=this
				let data = {};
				data.id=id
				data.sum=sum
				data.tp=2
				if(uni.getStorageSync("userinfo").id){
					data.uid = uni.getStorageSync("userinfo").id;
				}else{
					uni.showModal({
						title: '温馨提示',
						content: '请先登后添加购物车',
						showCancel: true,
						confirmText: "确定",
						success: function (res) {
							if (res.confirm) {
								uni.navigateTo({
									url:'/pages/login/login'
								})
							} else if (res.cancel) {
								
							}
						}
					});
					return false;
				}
				uni.request({
					url: this.configs.webUrl+'/api/shop/addgwc',
					data: data,
					success: data => {
						if(data.data.code==1){
							//uni.showToast({ title: data.data.msg,icon:"none" });
							console.log(data.data.data)
							this.setTabBarBadges(data.data.data)
						}else{
							uni.showToast({ title: data.data.msg,icon:"none" });
						}
						
					},
					fail: (data, code) => {
					}
				});
			},
			setTabBarBadges(count){
				if(count>=99){
					count='99+'
				}
				if(count<=0){
					uni.removeTabBarBadge({
					  index: 2
					})
				}else{
					uni.setTabBarBadge({
					  index: 2,
					  text: ""+count+""
					})
				}
			},
			//请求数据
			async loadData(list){
				/* 购物车 */
				let cartList = list.map(item=>{
					item.checked = true;
					return item;
				});
				this.cartList = cartList;
				this.calcTotal();  //计算总价
			},
			//监听image加载完成
			onImageLoad(key, index) {
				this.$set(this[key][index], 'loaded', 'loaded');
			},
			//监听image加载失败
			onImageError(key, index) {
				this[key][index].image = '/static/errorImage.jpg';
			},
			navToLogin(){
				uni.navigateTo({
					url: '/pages/public/login'
				})
			},
			 //选中状态处理
			check(type, index){
				if(type === 'item'){
					this.cartList[index].checked = !this.cartList[index].checked;
				}else{
					const checked = !this.allChecked
					const list = this.cartList;
					list.forEach(item=>{
						item.checked = checked;
					})
					this.allChecked = checked;
				}
				this.calcTotal(type);
			},
			detail(id){
				uni.navigateTo({
					url:'/pages/client/shop/product?id='+id
				})
			},
			//数量
			numberChange(data){
				console.log(this.cartList[data.index].sid);
				this.addgwc(data.number,this.cartList[data.index].sid)
				this.cartList[data.index].number = data.number;
				this.calcTotal();
			},
			//删除
			deleteCartItem(index){
	
				let list = this.cartList;
				let row = list[index];
				let id = row.id;
				
				this.cartList.splice(index, 1);
				this.calcTotal();
				uni.hideLoading();
				this.gwcdel(id,1)
			},
			gwcdel(id,tp){
				let this_=this
				let data = {};
				data.id=id
				data.tp=tp
				if(uni.getStorageSync("userinfo").id){
					data.token = uni.getStorageSync("userinfo").token;
					data.uid = uni.getStorageSync("userinfo").id;
					uni.request({
						url: this.configs.webUrl+'/api/shop/gwcdel',
						data: data,
						success: data => {
							if(data.data.code==1){
								uni.showToast({ title: data.data.msg,icon:"none" });
								if(data.data.data<=0){
									this.total=0
									this.setTabBarBadges(data.data.data)
								}else{
									this.setTabBarBadges(data.data.data)
								}
							}else{
								uni.showToast({ title: data.data.msg,icon:"none" });
							}
							
						},
						fail: (data, code) => {
						}
					});
				}else{
					uni.showModal({
						title: '温馨提示',
						content: '请先登后添加购物车',
						showCancel: true,
						confirmText: "确定",
						success: function (res) {
							if (res.confirm) {
								uni.navigateTo({
									url:'/pages/login/login'
								})
							} else if (res.cancel) {
								
							}
						}
					});
				}
				
			},
			//清空
			clearCart(){
				uni.showModal({
					content: '清空购物车？',
					success: (e)=>{
						if(e.confirm){
							this.cartList = [];
							this.gwcdel(0,2)
							this.total=0
						}
					}
				})
			},
			//计算总价
			calcTotal(){
				let list = this.cartList;
				if(list.length === 0){
					this.empty = true;
					return;
				}
				let total = 0;
				let checked = true;
				list.forEach(item=>{
					if(item.checked === true){
						total += item.price * item.number;
					}else if(checked === true){
						checked = false;
					}
				})
				this.allChecked = checked;
				this.total = Number(total.toFixed(2));
			},
			//创建订单
			createOrder(){
				let list = this.cartList;
				let goodsData = [];
				list.forEach(item=>{
					if(item.checked){
						goodsData.push({
							id: item.id,
							sid: item.sid,
							image: item.image,
							vipzk: item.vipzk,
							price: item.price,
							yprice: item.yprice,
							checked:item.checked,
							title:item.title,
							number: item.number
						})
					}
				})
				uni.setStorage({//缓存配置信息
					key: 'GwcData',  
					data: goodsData
				})
				uni.navigateTo({
					//url: `/pages/client/shop/buy?id=0&data=${JSON.stringify(goodsData)}`
					url: '/pages/client/shop/buy?id=0'
				})
			}
		}
	}
</script>

<style lang='scss'>
	.container{
		padding-bottom: 134upx;
		/* 空白页 */
		.empty{
			position:fixed;
			left: 0;
			top:0;
			width: 100%;
			height: 100vh;
			padding-bottom:100upx;
			display:flex;
			justify-content: center;
			flex-direction: column;
			align-items:center;
			background: #fff;
			image{
				width: 240upx;
				height: 160upx;
				margin-bottom:30upx;
			}
			.empty-tips{
				display:flex;
				font-size: $font-sm+2upx;
				color: $font-color-disabled;
				.navigator{
					color: $uni-color-primary;
					margin-left: 16upx;
				}
			}
		}
	}
	/* 购物车列表项 */
	.cart-item{
		display:flex;
		position:relative;
		padding:30upx 40upx;
		.image-wrapper{
			width: 230upx;
			height: 230upx;
			flex-shrink: 0;
			position:relative;
			image{
				width: 230upx;
				height: 230upx;
				border-radius:8upx;
			}
		}
		.checkbox{
			position:absolute;
			left:-16upx;
			top: -16upx;
			z-index: 8;
			font-size: 44upx;
			line-height: 1;
			padding: 4upx;
			color: $font-color-disabled;
			background:#fff;
			border-radius: 50px;
		}
		.item-right{
			display:flex;
			flex-direction: column;
			flex: 1;
			overflow: hidden;
			position:relative;
			padding-left: 30upx;
			.title,.price{
				font-size:$font-base + 2upx;
				color: $font-color-dark;
				height: 40upx;
				line-height: 40upx;
			}
			.attr{
				font-size: $font-sm + 2upx;
				color: $font-color-light;
				height: 50upx;
				line-height: 50upx;
			}
			.price{
				height: 50upx;
				line-height:50upx;
			}
		}
		.del-btn{
			padding:4upx 10upx;
			font-size:34upx; 
			height: 50upx;
			color: $font-color-light;
		}
	}
	/* 底部栏 */
	.action-section{
		/* #ifdef H5 */
		margin-bottom:100upx;
		/* #endif */
		position:fixed;
		left: 30upx;
		bottom:30upx;
		z-index: 95;
		display: flex;
		align-items: center;
		width: 690upx;
		height: 100upx;
		padding: 0 30upx;
		background: rgba(255,255,255,.9);
		box-shadow: 0 0 20upx 0 rgba(0,0,0,.5);
		border-radius: 16upx;
		.checkbox{
			height:52upx;
			position:relative;
			image{
				width: 52upx;
				height: 100%;
				position:relative;
				z-index: 5;
			}
		}
		.clear-btn{
			position:absolute;
			left: 26upx;
			top: 0;
			z-index: 4;
			width: 0;
			height: 52upx;
			line-height: 52upx;
			padding-left: 38upx;
			font-size: $font-base;
			color: #fff;
			background: $font-color-disabled;
			border-radius:0 50px 50px 0;
			opacity: 0;
			transition: .2s;
			&.show{
				opacity: 1;
				width: 120upx;
			}
		}
		.total-box{
			flex: 1;
			display:flex;
			flex-direction: column;
			text-align:right;
			padding-right: 40upx;
			.price{
				font-size: $font-lg;
				color: $font-color-dark;
			}
			.coupon{
				font-size: $font-sm;
				color: $font-color-light;
				text{
					color: $font-color-dark;
				}
			}
		}
		.confirm-btn{
			padding: 0 38upx;
			margin: 0;
			border-radius: 100px;
			height: 76upx;
			line-height: 76upx;
			font-size: $font-base + 2upx;
			background: $uni-color-primary;
			box-shadow: 1px 2px 5px rgba(217, 60, 93, 0.72)
		}
	}
	/* 复选框选中状态 */
	.action-section .checkbox.checked,
	.cart-item .checkbox.checked{
		color: $uni-color-primary;
	}
</style>
